Abstract
We describe various radical telomerization reactions of chlorotrifluoroethylene (CTFE) and dialkyl hydrogenphosphonates (HP(O)(OR) 2 R=Me, Et). Characterization by 1 H , 19 F and 31 P NMR of the resulting telomers are detailed. For the heaviest telomers, we used MALDI-TOF analyses to give the mass values. Parameters such as pressure, solvent, R 0, C 0, temperature and nature of initiator have been studied in order to optimize this reaction. Some products have been prepared in large quantities using special high-pressure reactors. We also succeeded in the cleavage of phosphonic esters in order to obtain acidic structures well-known for their adhesive properties on metals.
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